Homeostasis Definition
- Homeostasis enables living organisms to maintain equilibrium despite the change in the external environment
- Maintain equilibrium
- Living system
- Despite the change in the external environment
Processes
- Osmosis
- Diffusion
- Active Transport
Biomolecules
ENERGY, MATTER & ORGANISATION -BIOMOLECULES Living systems are complex and highly organized, and they require matter and energy to maintain this organization.
Energy is stored in the organization of matter
- Energy is stored in fats in human beings.
Living organisms use matter and energy to build and maintain body structures
- Milk contains calcium that is used by young mammals to build bones. Proteins found in milk builds muscles in the body.
Living organisms obtain and process matter and energy
The structure of a molecule always dictates its function.
The structure and function of biological living systems obeys the laws of thermodynamics.
Communities of organisms depend on the cycling of matter and the flow of energy
- Water and Carbon Cycle
The constant flow of energy and cycling of matter in the biosphere leads to a balanced or steady state.
This balance is achieved through various biogeochemical cycles and the processes of photosynthesis and cellular respiration - focus is on ENERGY
The questions we ask about ourselves and the world around us:
Are we just chemicals?
Are we what we eat?
Why is the carbon molecule suitable for life as we know it?
- Because the carbon atom has a valency of 4 so it can bond with 4 other atoms and produce different types of
macromolecules each with different properties and functions.
- Carbon can combine with itself.
Why is the chemistry of water suitable for life
Energy
- Energy cannot be created or destroyed, but it can be LOST, like in heat.
- Change from one form to another form
- Flow from one system to another system
- Flow from one organism to another organism
Homeostasis
Definition
- Homeostasis enables living organisms to maintain equilibrium despite the change in the external environment
- Maintain equilibrium
- Living system
- Despite the change in the external environment
Processes
- Osmosis
- Diffusion
- Active Transport
Biomolecules
ENERGY, MATTER & ORGANISATION - BIOMOLECULESLiving systems are complex and highly organized, and they require matter and energy to maintain this organization.
- Energy is stored in the organization of matter
- Energy is stored in fats in human beings.- Living organisms use matter and energy to build and maintain body structures
- Milk contains calcium that is used by young mammals to build bones. Proteins found in milk builds muscles in the body.- Living organisms obtain and process matter and energy
- The structure of a molecule always dictates its function.
- The structure and function of biological living systems obeys the laws of thermodynamics.
- Communities of organisms depend on the cycling of matter and the flow of energy
- Water and Carbon CycleThis balance is achieved through various biogeochemical cycles and the processes of photosynthesis and cellular respiration - focus is on ENERGY
The questions we ask about ourselves and the world around us:
- Are we just chemicals?
- Are we what we eat?
- Why is the carbon molecule suitable for life as we know it?
- Because the carbon atom has a valency of 4 so it can bond with 4 other atoms and produce different types ofmacromolecules each with different properties and functions.
- Carbon can combine with itself.
Energy
- Energy cannot be created or destroyed, but it can be LOST, like in heat.
- Change from one form to another form
- Flow from one system to another system
- Flow from one organism to another organism